Gerard, J. (1984). Gerard's Herball: The essence thereof distilled. Neeraj.
Cita Chicago (17th ed.)Gerard, John. Gerard's Herball: The Essence Thereof Distilled. Delhi: Neeraj, 1984.
Cita MLA (9th ed.)Gerard, John. Gerard's Herball: The Essence Thereof Distilled. Neeraj, 1984.
Atenció: Aquestes cites poden no estar 100% correctes.